APA
Duignan B., . (2011). The history of Western ethics. New York: Britannica Educational Pub. in association with Rosen Educational Services.
Chicago
Duignan Brian, . 2011. The history of Western ethics. New York: Britannica Educational Pub. in association with Rosen Educational Services.
Harvard
Duignan B., . (2011). The history of Western ethics. New York: Britannica Educational Pub. in association with Rosen Educational Services.
MLA
Duignan Brian, . The history of Western ethics. New York: Britannica Educational Pub. in association with Rosen Educational Services. 2011.